You probably haven’t had to do longhand math in years, but you do mental math every day. Or maybe you google math problems ten times a day, because you’ve forgotten how to do any math beyond your ...

Add Yahoo as a preferred source to see more of our stories on Google. What is 29 + 14? Some readers may solve the problem procedurally: line up the two numbers, add the ones column, carry the one, and ...

“Laziness is our saving grace,” writes mathematician Du Sautoy (The Creativity Code) in this accessible look at thousands of years of mathematical shortcuts. Focusing on 10 different shortcuts, Du ...